import React, { Component } from 'react'
import PropTypes from 'prop-types'
import Item from '../Item'
import './index.css'

export default class List extends Component {

  // 对接收的props进行，类型，必要性的限制
    static propsTypes = {
      todos: PropTypes.array.isRequired,
      updateTodo: PropTypes.func.isRequired,
      deleteTodo: PropTypes.func.isRequired
    }

  render() {
    const {todos, updateTodo, deleteTodo} = this.props
    return (
      <ul className="todo-main">
        {
          todos.map(todo=>{
            return <Item 
            key={todo.id} {...todo} 
            updateTodo={updateTodo}
            deleteTodo={deleteTodo}
            />
          })
        }  
       </ul>
  )
  }
}
